（1）What did the teacher ask the students to do？
A.To play games together.
B.To finish a composition （作文）.
C.To have a football match.
（2）All the students began to write

.
A.but Tom began to draw a picture.
B.but Tom didn't.
C.and Tom did，too.
（3）Tom finished his composition

.
A.forty-five minutes later.
B.after an hour.
C.one minute later.